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(No Model.) 2 Sheets-Sheet 1. R. PRYER. LOOPER POR SEWING DAGHMES` No. 378,165. Patented Feb. 21, 1888.

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LOOPEB, PDR SEWING- MACHINES.

No. 878,185K Patented Feb. 21, 1888.,

i 'NrTnn STATES PATENT Ormes.

RICHARD FRYER, OF BROOKLYN, NEW YORK, ASSIGNOR TO A. G. JENNINGS di SONS, OF SAME PLACE.

LOOPER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 378,165', dated February 21, 1888.

Application filed Muy 5, 1887.

To all whom it may concern:

Be it known that I, RICHARD FRYER, of Brooklyn, Kings county, New York, have invented new and useful Improvements in Sewing-Machines, of which the following is a full, clear, and exact description.

This invention relates to that class of sewing-machines in which two rows of stitches are formed simultaneously side by side.

rlhe invention consists in a new construction ot' looper, as will be more fully hereinafter set forth.

Reference is to be had to the accompanying drawings, forming part of this specification, in which- Figure lis a side view of a sewing-machine, partly in section, embodying my invention. Fig. 2is an end view of same, partly in section, the section being taken on line c c,F1'g. l. Fig. 3 is an enlarged detail view of my improved loopers, shown in the act of taking the thread 'from the double needle and throwing oli the loops already formed, the cloth-plate and adjoining parts being in section. Fig. 4 is a similar view, but showing the loopers in the act of distending the loops and tightening them on those previously thrown off. Fig. 5 is an enlarged detail face view of one of my improved loopers with the threads thereon, as in Fig. 3. Fig. (i is a detail plan view of part ot' the nccdle-plate, and Fig. 7 is a detail face view of my improved double needle.

A in the drawings is the frame of a sewingmachine.

B is the reciprocating needlebar moved by ordinary or suitable means above the clothplate D.

The machineshown in the drawings is known as the Willcox S5 Gibbs sewing-machine, but other styles of machines may be used in carrying out my invention, if desired.

The needle-bar B carries a double needle,E, on a single shank, a. Each of the two prongs I) b on said shank has an eye and point and constitutes, in fact, aneedle proper. The eyes on said prongs are on the same plane and also' in the same line. (See Figs. 1,3, and et.) The prongs b Z) in each double needle may be placed at suitable distances apart. The same machine can have several sets of such needles for male ing stitches close together or farther apart.

of the double needle.

Serial No. 237,176. (No model.)

By having both prongs or needles proper on one shank the use of differentlyspaced needles becomes possible. This would not be possible if each needle proper were inserted in its own socket in the needlebar.

F, Fig. 6, is a removable needle-plate, which may be secured to the cloth-plateD by screws d d, and it is provided with slots e e, for the passage of the cloth-feeder,and with two holes, 6o ff, for the passage of the prongs b b of the needle E. These holesff are arranged on dif ferent plates F at distances apart corresponding to the distances between the prongs b b of different double needles E, so that when a double needle is changed a needleplate F may be used with holes corresponding to the width The bridge f2 separates these holes ff.

To insure that the threads will make no cross 7o or miss stitches, I place in some cases a guard or shield, g, on the under side of the bridge f2. As the needle E descends, the prongs b b pass on either side of the bridgef2 and downwardly-projecting shield g, thereby preventing the threads becoming intercrossed. The holesff may be in the cloth-plate D and not in a detachable plate F. The plate F, when used, may have merely the holes f f for the needles,and not the holes ce for the feed-dogs. 8o The needle E passes through the needle-plate F and between the twoloopersG and II, which are carried below the cloth-plate D. Thelooper H is mounted on the end of the driving-shaft I, and the looper G is mounted on the end of a shaft, J, journaled in the frame A. The shafts I and J are in exact line with one another, and are geared by means of the inter mediate shaft, K, carrying spur-wheels h t', which gear into spurwheels j Z on shafts I and 9o J, respectively. By this means the shafts I and .I move the loopers G H, and yet have a space between them to allow for the slipping oif of the loops.

The loopers have each a shank, m, which is g5 passed into the ends of the carrying-shafts and secured there by means of a set-screws The loopers are formed each with two projections,

o and p,preferably arranged atan obtuse angle to each other, as in Fig. 5. The projection o 1o has a nearly straight edge, q, beveled up from the center on both sides,as best seen in Fig. 3,

and terminates in along hooked point,r,which projects considerablyto one side from the face s of the looper, Fig. 3. The hook r of each looper projects toward the other looper. The projection p hasa wide rounding bevel, t.

u u are two straight or nearly straight edges on the back of the loopers, (see Fig. 5,) over which the threads slip. The looper G is what I call a left-hand looper, and the looper H a right-hand looper. In other respects they may be alike.

L is a spring-arm attached to the frame of the machine, and provided with two eyes, o o,

through which pass the threads w w from spools or bobbins. (Not shown.) The arm L acts as a giveandtake thread-guide to compensate for any unevenness that may be found in the threads wound upon the spools.

By making the loopers G and H with outwardly-bent hooks r and dispensing with any delivery point I am enabled to bring the loopers and thereby the stitches closer together than has heretofore been done. This is of great advantage. In order to increase or diminish the distance between the rows of stitches,it is only necessaryto move the loopers in the direction of the length of the shafts I and J and secure them in place by means of screws a, and then place a double needle E and needle-plate F of the required width in position, which is a very simple operation.

It will not be necessary to explain to those acquainted with sewing machines how the loopers G H engage the loops, distend them, and then slip them off. In this respect they act like the looper of a Willcox & Gibbs machine. rIhey differ from it in having no delivery-point and in projecting the hooks r farther sidewise. The delivery-point in the old looper is so far within the projection of the hub of the looper as to prevent two such 2. The looper G, consisting, substantially as described, of the part o, having the hook r, which projects outward beyond the face s of the looper, and the part p, having the beveled portion t, in combination with the double needle E, having the two prongs b b and thc single shank a, substantially as herein shown and described.

RICHARD FRYER.

Witnesses:

T. F. BOURNE, HARRY M. TURK. 

